Frigidaire Cooktop Error Code E45

E45 indicates that the cooktop's control board has detected an incoming power supply voltage that is too low for safe operation. The appliance monitors its supply voltage continuously, and when the voltage falls below the acceptable threshold, this code is triggered. The problem is most often found in the home's electrical supply rather than the cooktop itself.

No, you should not continue using the cooktop while E45 is active. Low voltage conditions can cause the cooktop to perform unpredictably, may prevent proper temperature regulation, and can potentially damage internal components over time. Address the underlying power supply issue before resuming use.

Repair costs vary depending on the root cause. If the issue is a loose wiring connection, costs may be minimal, typically in the range of a standard service call fee. Replacing a circuit breaker may cost between $150 and $300 including labor. If the cooktop's control board needs replacement, parts and labor can range from $200 to $450 or more depending on the specific model and local labor rates.

Start by checking the circuit breaker for the cooktop and verifying it is fully engaged and supplying proper voltage. Use a multimeter to measure the voltage at the terminal block or receptacle to confirm it meets the required supply specification. Inspect all wiring connections for looseness or corrosion. If the supply voltage is confirmed to be correct and the error persists, a faulty control board may need to be evaluated.

Resetting the cooktop by disconnecting power for a few minutes may temporarily clear the error display, but it will return if the underlying low voltage condition has not been corrected. The fault is tied to the actual supply voltage being detected, so a lasting fix requires resolving the electrical supply issue rather than simply resetting the unit.